<template>
  <div>
    <!--  面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--    卡片区域-->
    <el-card>
      <el-alert title="注意：只允许为第三级分类设置相关参数！" type="warning" show-icon
                :closable="false">
      </el-alert>
      <!--        选择商品分类区域-->
      <el-row class="cate_opt">
        <el-col>
          <span>选择商品分类：</span>
          <!--          级联选择框-->
          <el-cascader v-model="selectCataKays" :options="cateParams" :props="cataProps"
                       expand-trigger="hover" @change="handleChange">
          </el-cascader>
        </el-col>
      </el-row>
      <!--      tabs标签区域-->
      <el-tabs v-model="activeName" @tab-click="handleTabClick">
        <el-tab-pane label="动态参数" name="many">
          <el-button type="primary" size="mini" :disabled="isButtonDisable" @click="addDialogVisible = true">添加属性
          </el-button>
          <!-- 动态参数表格 -->
          <el-table :data="manyParamsData" border stripe>
            <!-- 展开行 -->
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="deleteClose(i,scope.row)">
                  {{ item }}
                </el-tag>
                <!--     New Tag标签-->
                <el-input
                  class="input-new-tag" v-if="scope.row.inputVisible" v-model="scope.row.inputValue"
                  ref="saveTagInput" size="mini" @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)">
                </el-input>
                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag
                </el-button>

              </template>
            </el-table-column>
            <!-- 索引列 -->
            <el-table-column type="index"></el-table-column>
            <el-table-column label="参数名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.attr_id)">
                  编辑
                </el-button>
                <el-button size="mini" type="danger" icon="el-icon-delete" @click="deleteEditDialog(scope.row.attr_id)">
                  删除
                </el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <el-tab-pane label="静态参数" name="only">
          <el-button type="primary" size="mini" :disabled="isButtonDisable" @click="addDialogVisible = true">添加参数
          </el-button>
          <!-- 静态参数表格 -->
          <el-table :data="onlyParamsData" border stripe>
            <!-- 展开行 -->
            <!-- 展开行 -->
            <el-table-column type="expand">
              <template slot-scope="scope">
                <el-tag v-for="(item,i) in scope.row.attr_vals" :key="i" closable @close="deleteClose(i,scope.row)">
                  {{ item }}
                </el-tag>
                <!--     New Tag标签-->
                <el-input
                  class="input-new-tag" v-if="scope.row.inputVisible" v-model="scope.row.inputValue"
                  ref="saveTagInput" size="mini" @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)">
                </el-input>
                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag
                </el-button>

              </template>
            </el-table-column>
            <!-- 索引列 -->
            <el-table-column type="index"></el-table-column>
            <el-table-column label="参数名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button size="mini" type="primary" icon="el-icon-edit" @click="showEditDialog(scope.row.attr_id)">
                  编辑
                </el-button>
                <el-button size="mini" type="danger" icon="el-icon-delete" @click="deleteEditDialog(scope.row.attr_id)">
                  删除
                </el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
    </el-card>
    <!--    添加区域对话框-->
    <el-dialog :title="'添加'+titleText" :visible.sync="addDialogVisible" width="50%" @close="addDialogClose">
      <el-form :model="addForm" :rules="addFormrules" ref="addFormref" label-width="100px" class="demo-ruleForm">
        <el-form-item label="活动名称：" prop="name">
          <el-input v-model="addForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addParams">确 定</el-button>
  </span>
    </el-dialog>
    <!--    修改区域对话框-->
    <el-dialog :title="'添加'+titleText" :visible.sync="editDialogVisible" width="50%" @close="editDialogClose">
      <el-form :model="editForm" :rules="editFormrules" ref="editFormref" label-width="100px">
        <el-form-item label="活动名称：" prop="attr_name">
          <el-input v-model="editForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editparams">确 定</el-button>
  </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
  data() {
    return {
      cateParams: [],  //商品参数
      cataProps: {
        value: 'cat_id',
        label: 'cat_name',
        children: 'children'
      },
      selectCataKays: [], //级联选择框双向绑定到的数组
      activeName: 'only', // 被激活的页签
      manyParamsData: [],   //动态数据
      onlyParamsData: [],    //静态数据
      addDialogVisible: false,
      addForm: {             //添加参数
        attr_name: ''       // 参数名称
      },
      addFormrules: {
        attr_name: [
          {required: true, message: '请输入参数名称：', trigger: 'blur'}
        ]
      },
      editForm: {},
      editDialogVisible: false,
      editFormrules: {
        attr_name: [
          {required: true, message: '请输入参数名称：', trigger: 'blur'}
        ]
      },     //编辑验证规则
    }
  },
  created() {
    this.getCateParams()
  },
  methods: {
    //获取参数列表
    async getCateParams() {
      const {data: res} = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        this.$message.error('获取商品分类数据失败！')
      }
      this.cateParams = res.data
      // console.log(this.cateParams)
    },
    //选项框变化 触发事件
    handleChange() {
      this.getParamsData()
    },
    //页签点击处理函数
    handleTabClick() {
      console.log(this.activeName)
      this.getParamsData()
    },
    //处理切换id丢失问题
    async getParamsData() {
      if (this.selectCataKays.length !== 3) {
        this.selectCataKays = []
        this.manyParamsData = []
        this.onlyParamsData = []
        return
      }
      // console.log(this.selectCataKays)
      //获取点击对应的参数
      const {data: res} = await this.$http.get(`categories/${this.cateId}/attributes`, {params: {sel: this.activeName}})
      if (res.meta.status !== 200) {
        return this.$message.error('获取参数失败！')
      }
      //截取字符串
      res.data.forEach(item => {
        item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : []
        item.inputVisible = false
        // 文本框中输入的内容
        item.inputValue = ''
      })
      console.log(res.data)
      //静态动态参数分类
      if (this.activeName == 'only') {
        this.onlyParamsData = res.data
      } else if (this.activeName == 'many') {
        this.manyParamsData = res.data
      }
    },
    addDialogClose() {
      this.$refs.addFormref.resetFields()
    },
    //添加参数
    addParams() {
      this.$refs.addFormref.validate(async valid => {
        if (!valid) return
        const {data: res} = await this.$http.post(`categories/${this.cateId}/attributes`, {
          attr_name: this.addForm.attr_name,
          attr_sel: this.activeName
        })
        if (res.meta.status !== 201) {
          return this.$message.error('添加参数失败！')
        }
        this.$message.success('添加参数成功！')
        this.addDialogVisible = false
        this.getParamsData()
      })
    },
    editDialogClose() {
      this.$refs.editFormref.resetFields()
    },
    //获取参数信息
    async showEditDialog(attr_id) {
      const {data: res} = await this.$http.get(`categories/${this.cateId}/attributes/${attr_id}`,
        {params: {attr_sel: this.activeName}})
      if (res.meta.status !== 200) {
        return this.$message.error('获取参数信息失败！')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    //修改参数
    editparams() {
      this.$refs.editFormref.validate(async valid => {
        if (!valid) return
        const {data: res} =
          await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`,
            {
              attr_name: this.editForm.attr_name,
              attr_sel: this.activeName
            })
        if (res.meta.status !== 200) {
          return this.$message.error('修改参数失败！')
        }
        this.$message.success('修改参数成功！')
        this.getParamsData()
        this.editDialogVisible = false
      })
    },
    //删除参数
    async deleteEditDialog(attr_id) {
      const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '删除参数', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消该操作！')
      }
      const {data: res} = await this.$http.delete(`categories/${this.cateId}/attributes/${attr_id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除参数失败！')
      }
      this.$message.success('删除参数成功！')
      this.getParamsData()
    },
    // 监听文本框变化   trim() 去除空格
    async handleInputConfirm(row) {
      if (row.inputValue.trim().length === 0) {
        row.inputValue = ''
        row.inputVisible = false
        return
      }
      // 如果没有 return 将内容保存 attr_vals 中
      row.attr_vals.push(row.inputValue.trim())
      row.inputValue = ''
      row.inputVisible = false
      // 修改tag标签
      this.setParams(row)
    },
    // 修改参数项
    async setParams(row) {
      const {data: res} = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`,
        {
          attr_name: row.attr_name,
          attr_sel: row.attr_sel,
          attr_vals: row.attr_vals.join(' ')
        })
      if (res.meta.status !== 200) {
        return this.$message.error('修改参数失败！')
      }
      this.$message.success('修改参数成功！')
    },
    //删除参数项
    deleteClose(i, row) {
      row.attr_vals.splice(i, 1)
      this.setParams(row)
    },
    showInput(row) {
      row.inputVisible = true
      // 点击按钮自动获取焦点  内容被渲染更新以后才会触发
      this.$nextTick(_ => {
        this.$refs.saveTagInput.$refs.input.focus();
      });
    }

  },

  computed: {
    //按钮状态
    isButtonDisable() {
      if (this.selectCataKays.length !== 3) {
        return true
      }
      return false
    },
    //被选中三级列表的id
    cateId() {
      if (this.selectCataKays.length === 3) {
        return this.selectCataKays[2]
      }
      return null
    },
    //对话框内容变换
    titleText() {
      if (this.activeName === 'many') {
        return '动态参数'
      } else {
        return '静态参数'
      }
    },
  }
}
</script>

<style lang="less" scoped>
.cate_opt {
  margin: 20px 0;
}

.el-tag {
  margin: 5px;
}

.input-new-tag {
  width: 120px;
}
</style>
